My InterpretationI think this song is about having a crush on someone and finally being able to forget them.

"This light
That shines on me tonight
Turns on
When you wander through my door

And your friends
Won't see you to the end
I'm sure
But you love them anyhow"

She brightens up his day but she only sees him and loves him as a friend.

"Lost feelings of love
Lost feelings of love
That hover above me"

He is starting to fall out of love with her.

"The ghosts
That visit me the most
Drop by
'Cause they know they can find me here

And they claim
To be help from me in chains
But come on
They're guilty as sin, my dear"

The "ghosts" are the dreams that he still has about her and the remains of love that he still has in him. He thinks that those dreams will help him getting over her but they only make him love her more.

"These stones
That are thrown against my bones
Break through
But they hurt less as time goes on

And alone
I build my own home
To be sure
That nobody can touch me now"

The "stones that are thrown into his bones" are the pain that hits him each time he is reminded that she doesn't love him, but as time goes by he tries to forget her and "build his own home", which means feeling comfortable with himself and "protecting" himself against love.